package com.wang.nowcoder.util;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;

/**
 * @author wang
 * @ClassName CookieUtil
 * @Description TODO
 * @date 2021/12/20 19:24
 * @Version 1.0
 */
public class CookieUtil {
    public static String getValue(HttpServletRequest request,String name){
        if (request == null || name == null){
            throw new IllegalArgumentException("参数为空");
        }
        Cookie[] cookies = request.getCookies();
        if (cookies!=null){
            for (Cookie cookie : cookies) {
                if (cookie.getName().equals(name)){
                    return cookie.getValue();
                }
            }
        }
        return null;
    }


}
